Home / 10,867.21-14,996.81-6,391.15

Finding the Fourth Proportional to 10,867.21, 14,996.81 and 6,391.15

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Solution

The fourth proportional to 10,867.21, 14,996.81 and 6,391.15 is: 8,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,867.21 : 14,996.81 = 6,391.15 : x
  2. Step 2: Convert to fraction form
    10,867.21/14,996.81 = 6,391.15/x
  3. Step 3: Cross multiply
    10,867.21x = 14,996.81 × 6,391.15
  4. Step 4: Simplify right side
    10,867.21x = 95,846,862.23
  5. Step 5: Solve for x
    x = 95,846,862.23/10,867.21
  6. Step 6: Final answer
    x = 8,819.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.